Diagnosing coolant loss on a golf 7 2.0 TDi
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Diagnosing coolant loss on a golf 7 2.0 TDi
Hi guys
I have been experiencing coolant loss on my golf 7 Tdi for a few months now. The indicative amount of loss is at approx 250ml per 500kms driven.
The car is at 120 000kms, currently. Cambelt, water pump and water bottle were changed at 108000kms.
I have had a pressure test done on the cooling system and there was no loss of pressure detected.
The car drives perfectly and does heat up at all even in the worst of traffic conditions.
Any ideas guys as to the checks that I can carry out?
I don't see any water on floor of car and the under engine cover appears dry.
I have been experiencing coolant loss on my golf 7 Tdi for a few months now. The indicative amount of loss is at approx 250ml per 500kms driven.
The car is at 120 000kms, currently. Cambelt, water pump and water bottle were changed at 108000kms.
I have had a pressure test done on the cooling system and there was no loss of pressure detected.
The car drives perfectly and does heat up at all even in the worst of traffic conditions.
Any ideas guys as to the checks that I can carry out?
I don't see any water on floor of car and the under engine cover appears dry.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Do you keep filling up and then it drops. Does the warning light come on. is the level under the 'min' mark on the bottle at that stage when you fill up?.
Do you fill it to above the max mark?.
Do you fill it to above the max mark?.
Stephan van Tonder - Jhb - Putfontein Benoni
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Yes have to keep topping up and then it drops as I drive.panic-mechanic wrote: ↑Mon Mar 25, 2019 12:58 pm Do you keep filling up and then it drops. Does the warning light come on. is the level under the 'min' mark on the bottle at that stage when you fill up?.
Do you fill it to above the max mark?.
Yes the warning light comes on very time the coolant gets low.
Yes the level is under the min mark when I need to fill.
Yes I fill it to just above the max mark.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Does your car have an intercooler or a charge cooler
If it has the charge cooler, thats your culprit
It leaks into the intake and burns out through the exhaust
Had the same problem on my Jetta
If it has the charge cooler, thats your culprit
It leaks into the intake and burns out through the exhaust
Had the same problem on my Jetta
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
So charge cooler as in the EGR cooler? Did you have to replace it or have it repaired?
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
No , it takes the place of an intercooler
In my car its mounted to the rear of the engine ,onto the intake
Check for water pipes on you car , going towards the intake, there should be 2 going into a squarish housing
Also check first if your car has a intercooler, cos if it does then this is not gonna help
Had to replace mine, cost from VW was about R3k
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
OK cool thanks dude will try thatrkn wrote: ↑Mon Mar 25, 2019 3:20 pmNo , it takes the place of an intercooler
In my car its mounted to the rear of the engine ,onto the intake
Check for water pipes on you car , going towards the intake, there should be 2 going into a squarish housing
Also check first if your car has a intercooler, cos if it does then this is not gonna help
Had to replace mine, cost from VW was about R3k
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
That's actually the egr cooler....yes they do leak...but have a look at your water bottle could be leaking from the seems...Also check the water pump.they tend to leak....look out for a white residue...normally when coolants leaks it leaves a white residue when dry
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
There is no charge cooler on vw tdi's. Yes the thing you are talking about is the EGR cooler. Yes they are often the reason for a leak and a good place to start.
we have also seen failed / leaking water pumps at those km's. The vw coolant has a Fluorescence agent in it so if you use a black light you can actually see a leak very clearly.
we have also seen failed / leaking water pumps at those km's. The vw coolant has a Fluorescence agent in it so if you use a black light you can actually see a leak very clearly.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Thanks, I assume the EGR cooler is near/next to the turbo. IL start there as I did have the water pump replaced together with the cambeltpanic-mechanic wrote: ↑Tue Mar 26, 2019 8:00 am There is no charge cooler on vw tdi's. Yes the thing you are talking about is the EGR cooler. Yes they are often the reason for a leak and a good place to start.
we have also seen failed / leaking water pumps at those km's. The vw coolant has a Fluorescence agent in it so if you use a black light you can actually see a leak very clearly.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Well it sits next to the exhaust so yes near the turbo. There are water pipes to it and there are metal pipes to it from the exhuast and from there to the intake
Stephan van Tonder - Jhb - Putfontein Benoni
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Very likely a EGR cooler issue. think the coolant leaks into the exhaust which is why you likely do not see any leaks anywhere. Similar incidents reported on the 2.0TDI amarok's
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Thanks panic, appreciatedpanic-mechanic wrote: ↑Tue Mar 26, 2019 10:55 am Well it sits next to the exhaust so yes near the turbo. There are water pipes to it and there are metal pipes to it from the exhuast and from there to the intake
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Thanks dude, ive got an Amarok too, hope this doesn't start to play up on that as well
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Is this leaking egr cooler something that can be delayed for a while or is it one of those things that could cause catastrophic failure?
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Well you can delay it as long as you keep the water full. But it's always better to attend to it promptly as it might dump all the water suddenly and then it's an issue. You can bypass the entire thing and get it coded out or simply replace it.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
thanks Panic - was trying to get a feel for how long I have until i can arrange finances for it. Got a price from VW and the cooler alone is 8k from VW - still need to factor in Labour.panic-mechanic wrote: ↑Wed Mar 27, 2019 8:16 am Well you can delay it as long as you keep the water full. But it's always better to attend to it promptly as it might dump all the water suddenly and then it's an issue. You can bypass the entire thing and get it coded out or simply replace it.
But i guess you are right - rather get i fixed asap as I would not want to create further issues like damage to the head from overheating etc
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Bypassing it and coding it off will cost you way less than 8k.....might as well do a stage1 remap and also code off the dpf ..so you will be fixing the water problem, sorting out the dpf ,which will give you headaches in the future...and gaining some horses aswell...
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Thanks dude - any particular company you would suggest for the software? from what i know, the bigger boys like Revo dont do EGR deletes etc due to legislative/emissions laws in the UKsmoke.machine wrote: ↑Wed Mar 27, 2019 5:59 pm Bypassing it and coding it off will cost you way less than 8k.....might as well do a stage1 remap and also code off the dpf ..so you will be fixing the water problem, sorting out the dpf ,which will give you headaches in the future...and gaining some horses as well...
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
I got mine done yesterday and it costed me R3500 and I went with ATM Chiptuning, they don't fit a Chip, the load new SW onto the ECU.Gti3 wrote: ↑Thu Mar 28, 2019 9:42 amThanks dude - any particular company you would suggest for the software? from what i know, the bigger boys like Revo dont do EGR deletes etc due to legislative/emissions laws in the UKsmoke.machine wrote: ↑Wed Mar 27, 2019 5:59 pm Bypassing it and coding it off will cost you way less than 8k.....might as well do a stage1 remap and also code off the dpf ..so you will be fixing the water problem, sorting out the dpf ,which will give you headaches in the future...and gaining some horses as well...
Based in the Vaal, look up Walco Vaal.
Otherwise on FB you can get ATM Chiptuning as well, Lucas Reyneke is the name of the other dealer
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
He is in durban. Doubt he is gonna drive to the vaal for it.
Stephan van Tonder - Jhb - Putfontein Benoni
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Yes thanks Panic, I'm located in Durban.panic-mechanic wrote: ↑Thu Mar 28, 2019 5:24 pm He is in durban. Doubt he is gonna drive to the vaal for it.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
My mate had his EGR delete and software done on his amarok at Vagspeccentre, they use Unitronic/DNA tunes. I am sure there must be a unitronic agent down in durbsGti3 wrote: ↑Fri Mar 29, 2019 6:24 amYes thanks Panic, I'm located in Durban.panic-mechanic wrote: ↑Thu Mar 28, 2019 5:24 pm He is in durban. Doubt he is gonna drive to the vaal for it.
Darryn Van Rooyen
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Thanks Dazza, I have found a tuner to assist me with this. Hopefully will get it done during the week. Getting the performance map while I'm at it.dazza wrote: ↑Tue Apr 02, 2019 12:41 pmMy mate had his EGR delete and software done on his amarok at Vagspeccentre, they use Unitronic/DNA tunes. I am sure there must be a unitronic agent down in durbsGti3 wrote: ↑Fri Mar 29, 2019 6:24 amYes thanks Panic, I'm located in Durban.panic-mechanic wrote: ↑Thu Mar 28, 2019 5:24 pm He is in durban. Doubt he is gonna drive to the vaal for it.
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Re: Diagnosing coolant loss on a golf 7 2.0 TDi
Update,
Have done the EGR cooler bypass and EGR delete via software this weekend.
Now I need to monitor if this has fixed the problem. Fingers crossed.
Have done the EGR cooler bypass and EGR delete via software this weekend.
Now I need to monitor if this has fixed the problem. Fingers crossed.
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2012 AMAROK BiTDi HIGHLINE 4MOTION 6MT
EX:2013 MK7 TDi HIGHLINE DSG
EX:2010 MK6 GTI 6MT
EX:2006 Ibiza Cupra TDi
EX:1993 Golf 3 Gti
EX:1970 Beetle 1600 Twinport